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Shallow copy of a Map in Java
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106
It's always better to copy using a copy constructor. clone() in Java is broken (see SO: How to ...
Why does X[Y] join of data.tables not allow a full outer join, or a left join?
...context of each group. Let's say foo is in X, and bar is in Y (along with 20 other columns in Y). Isn't X[Y,sum(foo*bar)] quicker to program and quicker to run than a merge of everything wastefully followed by a subset?
If you want a left outer join of X[Y]
le <- Y[X]
mallx <- merge(X, ...
Routes with Dash `-` Instead of Underscore `_` in Ruby on Rails
...s/rails/blob/4-1-stable/actionpack/lib/action_dispatch/routing/mapper.rb#L1012
#
# config/initializers/adjust-route-paths.rb
module ActionDispatch
module Routing
class Mapper
module Resources
class Resource
def path
@path.dasherize
end
end
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Postgres: Distinct but only for one column
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jun 4 '13 at 12:36
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how to add script src inside a View when using Layout
...he head
– dferraro
Jan 11 '13 at 19:04
3
@dferraro: then you need to add RenderSection("Scripts")...
How to detect my browser version and operating system using JavaScript?
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10 Answers
10
Active
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How can I get Knockout JS to data-bind on keypress instead of lost-focus?
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answered Dec 8 '10 at 19:25
Sergei GolosSergei Golos
4,26211 gold badge1515 silver badges1919 bronze badges
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Difference between CLOB and BLOB from DB2 and Oracle Perspective?
...ences:
LOB definition in DB2: http://pic.dhe.ibm.com/infocenter/db2luw/v10r5/topic/com.ibm.db2.luw.sql.ref.doc/doc/r0008473.html
SQL and XML limits: http://pic.dhe.ibm.com/infocenter/db2luw/v10r5/topic/com.ibm.db2.luw.sql.ref.doc/doc/r0001029.html
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What does the `#` operator mean in Scala?
...t; val a1 = new A
a1: A = A@1497b7b1
scala> val a2 = new A
a2: A = A@2607c28c
scala> a2.f(new a1.B)
<console>:11: error: type mismatch;
found : a1.B
required: a2.B
a2.f(new a1.B)
^
scala> a2.g(new a1.B)
Got a B.
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Copying text to the clipboard using Java
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edited Oct 30 '19 at 19:47
Denis Abakumov
8055 bronze badges
answered Jul 15 '11 at 21:23
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